Title:
WAY COVER IMPROVEMENTS
Document Type and Number:
WIPO Patent Application WO2004096490
Kind Code:
A3
Abstract:
A way cover section (12, 14, 16) is shaped with a continuous lateral arc by pre-stressing so that it's top panel (18, 20, 22) has a radius in it's top panel from one side panel (12A, 14A, 16A) of the cover section (12, 14, 16) to the other (12B, 145B, 16B). A wiper (40) at the leading edge (38) of the cover sections (12, 14, 16) that may also serve as a bumper. The wiper (40) has an elastomeric wiper (48) section at one end and an elastomeric bumper (46) section at the other end, with an intermediate section (44) of a harder and more lubricious material that fits on a rolled over edge (38) of the cover section (14, 16) to which the wiper (40) is attached.
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Inventors:
O'ROURKE JAMES D (US)
ECKDAHL CORY L (US)
ECKDAHL CORY L (US)
Application Number:
PCT/US2004/010801
Publication Date:
April 14, 2005
Filing Date:
April 08, 2004
Export Citation:
Assignee:
A & A MFG CO INC (US)
O'ROURKE JAMES D (US)
ECKDAHL CORY L (US)
O'ROURKE JAMES D (US)
ECKDAHL CORY L (US)
International Classes:
B23Q11/08; E06B9/00; B23Q; (IPC1-7): E06B9/00
Foreign References:
| US3603651A | 1971-09-07 | |||
| US3845591A | 1974-11-05 | |||
| US5915897A | 1999-06-29 |
Other References:
See also references of EP 1626837A4
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